Former West Australian Labor MP Ernie Bridge, who was recently diagnosed with mesothelioma, has died at the age of 76.

He was suing the State Government and two of Australia's richest women, Gina Rinehart and Angela Wright, after being diagnosed with the condition.

Mr Bridge believed he was exposed to asbestos fibres and dust while he was the minister responsible for withdrawing government services from the town of Wittenoom in the late 1980s.

His daughter Cheryl posted on her social networking page that her father passed away on Sunday afternoon.

"I have been blessed to have the most beautiful mum and dad in the world and have made it possible for me, my daughters and family and the Western Australian public to have the most amazing life," she wrote.

"There are far too many things I could say but I have one word: grateful. RIP Dad and thanks for being the most amazing father, so generous and loving.

There are far too many things I could say but I have one word: grateful. RIP Dad and thanks for being the most amazing father, so generous and loving.

Ernie Bridge's daughter Cheryl

"I have so enjoyed living with you the past three years and caring for you the past 12 months through this illness. It has been the most enriching experience."